Efficient Catalytic Synthesis of Pyrazolo[3,4-d]pyrimidine, Pyrazolo[4,3- e][1,2,4]triazolo[1,5-c]pyrimidine, Pyrazolo[4,3-e][1,2,4]triazolo[1,5- c]pyrimidine, Pyrazolo[3,4-d]pyrimidin-4-one derivatives using Heterogeneous Preyssler Heteropolyacid, H 14 [NaP 5 W 30 O 11 0]/SiO 2

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13th Int. Electron. Conf. Synth. Org. Chem. 2009, a010:1-8

Communication

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Efficient Catalytic Synthesis of Pyrazolo[3,4-d]pyrimidine, Pyrazolo[4,3- e][1,2,4]triazolo[1,5-c]pyrimidine, Pyrazolo[4,3-e][1,2,4]triazolo[1,5- c]pyrimidine, Pyrazolo[3,4-d]pyrimidin-4-one derivatives using Heterogeneous Preyssler Heteropolyacid, H₁₄[NaP₅W₃₀O₁₁0]/SiO₂

Ali Gharib ^1,2^,*

, Manouchehr Jahangir ¹ and Mina Roshani ¹

1 Department of Chemistry, Islamic Azad University, Mashhad, Iran; 2 Agricultural Researches and Services Center, Mashhad, Iran; * Author to whom correspondence should be addressed.

(This article belongs to the section A. General Organic Synthesis)

Cite this paper as: Gharib, A.; Jahangir, M.; Roshani, M. Efficient Catalytic Synthesis of Pyrazolo[3,4-d]pyrimidine, Pyrazolo[4,3- e][1,2,4]triazolo[1,5-c]pyrimidine, Pyrazolo[4,3-e][1,2,4]triazolo[1,5- c]pyrimidine, Pyrazolo[3,4-d]pyrimidin-4-one derivatives using Heterogeneous Preyssler Heteropolyacid, H₁₄[NaP₅W₃₀O₁₁0]/SiO₂. In Proceedings of the 13th Int. Electron. Conf. Synth. Org. Chem., 1-30 November 2009; Sciforum Electronic Conferences Series, 2009, a010:1-8.

Abstract: With of reaction of 5-amino-pyrazole-4-carbonitrile derivative and using from supported Preyssler heteropolyacid catalyst in a series from reactions prepared a several new pyrazolo[3,4-d]pyrimidine, pyrazolo[3,4-e][1,4]diazepine, pyrazolo[3,4- d][1,2,3]triazine and pyrolo[4,3-e][1,2,4]triazolo[1,5-c]pyrimidine derivatives.

Keywords: Pyrazolo, pyrimidine, Supported, Preyssler, heteropolyacid, catalyst

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Efficient Catalytic Synthesis of Pyrazolo[3,4-d]pyrimidine, Pyrazolo[4,3- e][1,2,4]triazolo[1,5-c]pyrimidine, Pyrazolo[4,3-e][1,2,4]triazolo[1,5- c]pyrimidine, Pyrazolo[3,4-d]pyrimidin-4-one derivatives using Heterogeneous Preyssler Heteropolyacid, H14[NaP5W30O110]/SiO2

Efficient Catalytic Synthesis of Pyrazolo[3,4-d]pyrimidine, Pyrazolo[4,3- e][1,2,4]triazolo[1,5-c]pyrimidine, Pyrazolo[4,3-e][1,2,4]triazolo[1,5- c]pyrimidine, Pyrazolo[3,4-d]pyrimidin-4-one derivatives using Heterogeneous Preyssler Heteropolyacid, H₁₄[NaP₅W₃₀O₁₁0]/SiO₂